Allergist Bruce Wolf says this year has been especially bad.

过敏症专家布尔特·沃尔夫说今年的情况比往年更不乐观。

youdao

Allergist Bruce Wolf says this year has been especially bad.

过敏症专家布尔特·沃尔夫说今年的情况比往年更不乐观。

youdao